From the following table :
BOX Yellow Ball Blue Ball Green Ball
X 4 2 6
Y 7 2 1
A box is randomly selected and 5 balls are randomly selected, find the probability that 3 out of the 5 balls are yellow.
Probability
2011-04-09 8:20 pm
回答 (1)
2011-04-09 9:35 pm
✔ 最佳答案
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2011-04-09 23:37:01 補充：
Note:
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原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20110409000051KK00337